CC asked if we could make it possible to identify who spoke each utterance. First case: interviewer and subject; case two: multiple subjects.
I will add a particdesc element with xml:id = "interviewer" and then a who="#interviewer" attribute to the u element in the data file. That's TEI.

The very major headache is trying to figure out how those utterances get into a javascript array where they are accessed by the page. I can't figure that out. My hope is to modify the xslt so that some css attributes change for utterances by the interviewer, and then for that to be passed through into the javascript array. I may experiment first with the code that winds up as the transcript of the whole dialog as it has it's own xslt file (transcript_in_div.xsl).